Revolving grate for stoves, ranges, and furnaces.



A. HAWKINS-MASTERS. I REVOLVING GRATE FOR STOVES RANGES, AND FURNACES.

APPLICATION FILED APR.1

Patented Mar. 29, 1910.

Wad-M00 44! I flttarng ANDREW a mumm CO. Pumaumocmmsm. WASHINQION. D cvARTHUR HAWKINS-MASTERS, OF LONDON, ONTARIO, CANADA.

REVOLVING GRATE FOR S'IOVES, RANGES, AND FURNACES.

Specification of Letters Patent.

Patented Mar. 29, 1910.

Application filed April 1, 1909. Serial No. 487,341.

To all whom it may concern:

Be it known that I, ARTHUR HAWKINS- MASTERS, a subject of the King ofGreat Britain, and a resident of the city of London, in the county ofMiddlesex, in the Province of Ontario, Canada, have invented a new anduseful Revolving Grate for Stoves, Ranges, and Furnaces, of which thefollowing is a specification.

This invention relates to revolving grates and the object thereof is toprovide a grate of such class in a manner as hereinafter set forth thatis equally well adapted to stoves, ranges, furnaces, fire places, andwherever a rate can be advantageously used.

urther objects of the invention are to provide a revolving grate whichshall be comparatively simple in 1ts constructlon, strong, durable,efficient in its use, conveniently operated, readily set up in operatlveposition, and comparatively inexpensive to manufacture.

With the foregoing and other objects in view the invention consists ofthe novel construction, combination and arrangement of parts ashereinafter more specifically described and illustrated in theaccompanying drawings, wherein is shown the preferred embodiment of theinvention, but it is to be understood that changes, variations andmodifications can be resorted to which come within the scope of theclaims hereunto appended.

In the clrawings wherein like reference characters denote thecorresponding parts throughout the several views, Figure 1 is a top planof the revolving grate in accordance with this invention, Fig. 2 is aplan with the grate bars shifted to a position at right angles withrespect to the position of the bars shown in Fig. 1, Fig. 3 is alongitudinal sectional view on line XX, Fig. 2, with the addition of atoothed gear wheel and the operating means for the grate bars, Fig. 4 1sa detail illustrating the gears for revolving the grate barssimultaneously, and Fig. 5 1s a detail illustrating one of the endplates.

Referring to the drawings in detail 1 indicates the body portion of thegrate and which is in the form of a rectangular frame and 2 indicates apair of depending end pieces which are secured to the frame 1 by thehold fast devices 3. Each of the end pieces is provided with cylindricalbearing sockets 1, 5 and 6 and further with bosses 7. Each of the endpieces 2 is furthermore provided with an extension a which constitutes asupporting means for the grate when the latter is mounted within thefire place. Each of the end pieces 2 has its lower end inclined inwardlyand toward each other as at I) so as to guide the ashes into the ashpit.

The grate bars are indicated by the reference characters 9 and 10, thebars 9 are termed the side bars of the grate andthe bar 10 theintermediate bar. Each of the bars 9 is cylindrical in cross section andis furthermore provided with a pair of longitudinally-extending slots 19which extend in the same plane and each has its inner wall positioned ata point to one side of the center of its respective bar and its outerend wall positioned at a point in proximity to the end of its respectivebar. Each of the bars 9 is provided with journals 13 and 1 1, which aremounted in the bearing sockets t and 6, the journals 13 and 14. are ofless diameter than the diameter of the bar whereby each end of the baris provided with a shoulder, the shoulders for each bar being indicatedby the reference characters 11 and 12 and which when in engagement withthe side bars of the frame 1 prevent longitudinal movement of the gratebars with respect to the frame 1. Each of the journals 13 has projectingtherefrom an angular portion 16 to which is fixed a toothed wheel 22,the function of which will be hereinafter referred to. The intermediategrate bar is formed of two cylindrical members extending in parallelismwith respect to each other and connected together at their ends by thebridge pieces 0 and at their center by the web 0. The members of theintermediate grate bar 10 are spaced from each other so as to providebetween the web a and the bridge pieces 0 a pair of longitudinallyextending passages 21 which extend in the same dlreetion. Each of themembers of the grate bar 10 is provided with a pair ofl0ngitudinally-extending openings 20, the 0 enings of the pair of eachmember extenc in the same plane and the openings 20 terminate at a pointremoved from the center of the members and at a point removed from theends of the members. Each of the bridge pieces 0 is provided with thejournals, the journals are indicated by the reference characters 13 and14. and are mounted in the bearing sockets 5. The journal 13 whichprojects from the bridge pieces 0 is formed with the angular extension16 upon which is mounted a toothed wheel 22 meshlng wlth the gear wheel22. Attached to the extension 16 which pro ects from the ]our- 'nal 13carried by one of the bridge pieces a is a crank 17 provided with ahandle 18.

The reference character 23 indicates the cotter pins for retaining thetoothed wheels or gears 22 and 22 upon the extension 16.

From the foregoing arrangement of toothed wheels it is evident that whenthe handle 18 is grasped and turned that motion will be imparted throughthe intermediate grate bar and owing to the intermeshing with thetoothed wheels 22 and the toothed wheel 22 the grate bars 9 will be alsorevolved, but the grate bars 9 will revolve in opposite directions withrespect to the grate bar 10. As the grate bar is wider than either ofthe grate bars 9, such grate bar when revolving will raise and break thelive coal, clinkers or ashes and will furthermore form a large spacebetween it and the grate bars so as to allow the clinkers, ashes anddust to readily discharge.

The body portion 1 is detachably connected to the end pieces 2 by thehold fast devices 3 and by such arrangement the grate bars can bereadily mounted in position in the end pieces.

hat I claim is:

1. A'revolving grate comprising a pair of longitudinally-extending outergrate bars each provided with a pair of longitudinallyextendingopenings, an intermediate revolving grate bar formed of two cylindricalmembers connected together at each end and spaced from each other andeach provided with a pair of longitudinally -extending openings, each ofsaid members of the same diameter as an outer bar, and means forrevolving the grate bars simultaneously and the outer bars in anopposite direction with respect to the intermediate bar.

2. A revolving grate comprising a pair of longitudinallyextending outergrate bars each provided with a pair of longitudinallyextendingopenings, an intermediate revolving grate bar formed of two cylindricalmembers connected together at each end and spaced from each other andeach provided with a pair of longitudinallyextending openings, each ofsaid members of the same diameter as an outer bar, means for revolvingthe grate bars simultaneously and the outer bars in an oppositedirection with respect to the intermediate bar, and a frame providedwith side pieces in which said bars are journaled, said side pieceshaving the lower portions thereof extendinginwardly at an inclination.

3. A revolving grate comprising a pair of longitudinally extending outergrate bars, an intermediate grate bar formed of two members extending inparallelism with respect to each other, connected together at their endsand spaced from each other, said members furthermore connected togetherat their centers, and means for simultaneously revolving said grate barswith the outer bars revolving in an opposite direction with respect tothe intermediate bar, and each of said members of a diameter equal tothe diameter of an outer bar.

4:. A revolving grate comprising a pair of longitudinallyextending outergrate bars, an intermediate grate bar formed of two members extending inparallelism with respect to each other, connected together at their endsand spaced from each other, said members furthermore connected togetherat their centers, means for simultaneously revolving said grate barswith the outer bars revolving in an opposite direction with respect tothe intermediate bar, and each of said members of a diameter equal tothe diameter of an outer bar, and a frame having depending side piecesin which said bars are journaled, said side pieces having the lowerportions thereof extending inwardly, at an inclination.

In testimony whereof, I have signed in the presence of the twoundersigned witnesses. ARTHUR HAVVKINS-MASTERS; Witnesses P. J. EDMUNDs,I. S. EDMUNDS.

